The Lake Barkley Transmission Main consists of a new intake and pump station on Lake Barkley, with a line running 27 miles from there to a 220-million-gallon reservoir in Hopkinsville. A major part of the project was the purchase of the right-of-way of the abandoned Tennessee Central/ICG railroad bed between Hopkinsville and Gracey. That right-of-way represents roughly half of the 27 miles traversed by the transmission line.